Submission #4109

#	Time	Username	Problem	Language	Result	Execution time	Memory
4109		jays	Divide into triangle (kriii1_D)	C++98	1 / 1	0 ms	1096 KiB

D

#include <algorithm>
#include <cstdio>

using namespace std;

struct Stake {
	int x, y, id;
	bool operator < (const Stake& s) const {
		return x != s.x ? x < s.x : y < s.y;
	}
};

int N;
Stake s[901];

int main() {
	scanf("%d", &N);
	for (int i = 0; i < 3 * N; ++i) {
		scanf("%d%d", &s[i].x, &s[i].y);
		s[i].id = i + 1;
	}
	sort(s, s + 3 * N);
	for (int i = 0; i < N; ++i)
		printf("%d %d %d\n", s[3*i].id, s[3*i+1].id, s[3*i+2].id);
	return 0;
}

• Subtask 1: 1 / 1